<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="(c, index) in carInfoList" :key="c.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="c.isChecked == 1"
              @change="changeSatuas(c,$event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="c.imgUrl" />
            <div class="item-msg">{{ c.skuName }}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ c.skuPrice }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @click="hander('jian', -1, c)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              minnum="1"
              class="itxt"
              :value="c.skuNum"
              @change="hander('change', $event.target.value * 1, c)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="hander('jia', 1, c)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ c.skuNum * c.skuPrice }}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="delectCart(c.skuId)"
              >删除</a
            >
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="isCheckAll" @change="updateAllChecked"/>
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="delectAll">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ totalPrice }}</i>
        </div>
        <div class="sumbtn">
          <!-- <a class="sum-btn" href="###" target="_blank">结算</a> -->
          <router-link :to="{path:'/trade'}" class="sum-btn">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {mapGetters} from 'vuex'
import throttle from "lodash/throttle"
  export default {
    name: 'ShopCart', 
    mounted(){
      this.getData()
    },
    computed:{
      ...mapGetters(['shopList']),
      // 购物车数据
      carInfoList(){ 
        return this.shopList.cartInfoList || [ ]
      },
      // 计算总价
      totalPrice(){
        let sum = 0
        this.carInfoList.forEach(item => {
          sum += item.skuNum * item.skuPrice
        })
        return sum
      },
      isCheckAll(){
        return this.carInfoList.every(item => {
          item.isChecked == 1
        })
      }
    }, 
    methods:{
      getData(){
        this.$store.dispatch('getShopCart')
      },
      // 在购物车修改数量
      async hander(type,disNum,c){
        console.log(type,disNum,c); 
        switch (type) {
          case 'jia':
            disNum = 1
            break;
          case 'jian':
            disNum = c.skuNum > 1 ? -1 : 0
            break;
          case 'change':
            if(isNaN(disNum) || disNum < 1){
              disNum = 0
            }else {
              disNum = parseInt(disNum) - c.skuNum
            }
            break; 
        }
        try {
           await this.$store.dispatch('addCar',{id:c.id,num:disNum})
           this.getData() 
        }catch(err){
           alert(err.message)
        }
      },
      // 删除 
      delectCart:throttle(async function(id) {
        try {
           await this.$store.dispatch('delectCart',id)
           this.getData() 
        }catch(err){
           alert(err.message)
        }
      },1000),
      // 修改状态
      async changeSatuas(c,event){
       try {
           let checkrd = event.target.checkrd ? '1' : '0'
           await this.$store.dispatch('changeSatuas',{id:c.skuId,isChecked:checkrd})
           this.getData() 
        }catch(err){
           alert(err.message)
        }
      },
      // 删除所有选中的商品
      async delectAll(){
        try {
          await this.$store.dispatch('delectAll')
          this.getData()
        }catch(e){
          alert(e.message)
        }
      },
      // 全选
      async updateAllChecked(event){
        try {
          let checked = event.target.checked ? '1' : '0';
          await this.$store.dispatch('updateAllChecked',checked)
          this.getData()
        }catch(e){
          alert(e.message)
        }
      }
    }
  }
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>